On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table.

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

Pre- and postnatal thimerosal exposure was not linked with neuropsychological deficits. In 1999, the AAP and the U.S. Public Health Service suggested that vaccine manufacturers remove thimerosal ...

When manufacturers and public health officials took steps more than two decades ago to remove thimerosal from most pediatric vaccines, their intention was to bolster public confidence. Instead ...

This chapter is maintained as an evergreen document, regularly reviewed and updated to reflect the most current information on active and passive immunizing agents authorized for use in Canada.